A New York woman who suspected nursing home abuse against her ailing grandmother in a Bronx nursing home installed a hidden camera. The results were devastating.

According to reports, Diana Valentin’s 89-year-old grandmother is a resident of the Golden Crest Care Center in the Bronx. Valentin started noticing marks and bruises on the witness when she would go visit. As a result, Valentin decided to investigate the situation by placing a hidden camera in her grandmother’s room.

Valentin recorded over 600 hours of footage. Although she was told by caregivers that her grandmother had gotten bruises through accidents of her own, the footage showed something entirely different. In one instance, nursing aide Sandra Kerr, 55 is allegedly seen grabbing the victim, twisting her arm, slamming her onto her bed, and pulling her out of bed.

Shortly after the video footage was turned over to police, Kerr was arrested on a misdemeanor charge of endangering the welfare of a physically disabled person. The victim suffers from Alzheimer’s and dementia.

Valentin has already secured legal representation via a nursing home abuse attorney, and because of the pending criminal and civil charges, the video footage has yet to be released. However, after seeing the footage, Valentin immediately requested that her grandmother be sent to an emergency room:

“I viewed the video on a Sunday and a Monday morning I was at the nursing home, and I requested that they transfer her to the emergency room because my grandmother was not safe there,” Valentin said in a recent interview to ABC News.

The victim is now safe and doing well. She’s been transferred to a new nursing home in New Rochelle.